एपीए उद्धरण

Foot,David. (1981). Operational urban models: An introduction. Methuen & Co. Ltd.

शिकागो स्टाइल उद्धरण

Foot,David. Operational Urban Models: An Introduction. London: Methuen & Co. Ltd, 1981.

एमएलए उद्धरण

Foot,David. Operational Urban Models: An Introduction. Methuen & Co. Ltd, 1981.